Remove explicit keyword from multi-argument constructors

chrome/browser/browser_main.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1074 matching lines @@
 #endif
 }
 
 #if defined(OS_CHROMEOS)
 
 // Class is used to login using passed username and password.
 // The instance will be deleted upon success or failure.
 class StubLogin : public chromeos::LoginStatusConsumer,
                   public chromeos::LoginUtils::Delegate {
  public:
-  explicit StubLogin(std::string username, std::string password) {
+  StubLogin(std::string username, std::string password) {
     authenticator_ = chromeos::LoginUtils::Get()->CreateAuthenticator(this);
     authenticator_.get()->AuthenticateToLogin(
         g_browser_process->profile_manager()->GetDefaultProfile(),
         username,
         password,
         std::string(),
         std::string());
   }
 
   void OnLoginFailure(const chromeos::LoginFailure& error) {
@@ skipping 997 matching lines @@
 #if defined(OS_CHROMEOS)
   // To be precise, logout (browser shutdown) is not yet done, but the
   // remaining work is negligible, hence we say LogoutDone here.
   chromeos::BootTimesLoader::Get()->AddLogoutTimeMarker("LogoutDone",
                                                         false);
   chromeos::BootTimesLoader::Get()->WriteLogoutTimes();
 #endif
   TRACE_EVENT_END_ETW("BrowserMain", 0, 0);
   return result_code;
 }